(13 1/4 - 2 5/27 - 10 5/6)*230,04+46,75 -----------------------------------------------------------------дробная черта (1 3/7+31/3):(12 1/3-14 2/7)
((13+1/4 - 2-5/27 - 10-5/6)*230,04+46,75)/((1+3/7+31/3):(12+1/3-14-2/7)) = -(4100/247)